EP1767997A3 - Image forming apparatus having a high capacitance photoconductive layer - Google Patents

Image forming apparatus having a high capacitance photoconductive layer Download PDF

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Publication number
EP1767997A3
EP1767997A3 EP06120944A EP06120944A EP1767997A3 EP 1767997 A3 EP1767997 A3 EP 1767997A3 EP 06120944 A EP06120944 A EP 06120944A EP 06120944 A EP06120944 A EP 06120944A EP 1767997 A3 EP1767997 A3 EP 1767997A3
Authority
EP
European Patent Office
Prior art keywords
photoconductive layer
toner
image
per unit
forming apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06120944A
Other languages
German (de)
French (fr)
Other versions
EP1767997A2 (en
EP1767997B1 (en
Inventor
Manami c/o Canon Kabushiki Kaisha Haraguchi
Kenta c/o Canon Kabushiki Kaisha Kubo
Takeshi c/o Canon Kabushiki Kaisha Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Publication of EP1767997A2 publication Critical patent/EP1767997A2/en
Publication of EP1767997A3 publication Critical patent/EP1767997A3/en
Application granted granted Critical
Publication of EP1767997B1 publication Critical patent/EP1767997B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0813—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by means in the developing zone having an interaction with the image carrying member, e.g. distance holders
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
    • G03G15/5037—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor the characteristics being an electrical parameter, e.g. voltage
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
    • G03G15/5041—Detecting a toner image, e.g. density, toner coverage, using a test patch
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/751—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to drum
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/043—Photoconductive layers characterised by having two or more layers or characterised by their composite structure
    • G03G5/047—Photoconductive layers characterised by having two or more layers or characterised by their composite structure characterised by the charge-generation layers or charge transport layers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/08—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic
    • G03G5/082—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic and not being incorporated in a bonding material, e.g. vacuum deposited
    • G03G5/08214—Silicon-based
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0634—Developing device

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

An image forming apparatus including: an image bearing member having a photoconductive layer of a capacitance per unit area of 1.7 7 × 10-6 (F/m2) or more; and a developing device having a developer carrying member to which development voltage is applied for developing a latent image to form a toner image on the image bearing member, wherein the following Expression is satisfied: Q M ≥ 0.95 × Vcont M S × L t 2 ⁢ ε 0 ⁢ ε t + Ld ε 0 ⁢ ε d
Figure imga0001
where Q/M (C/g): an electric charge quantity per unit weight of the toner image, Vcont: a potential difference between a surface potential of the image bearing member and a direct current component of the development voltage, M/S (g/m2): a toner weight per unit area of the maximum density portion, Lt (m): a toner layer thickness in the maximum density portion, Ld (m): a photoconductive layer thickness, εt: a relative permittivity of the toner layer, εd: a relative permittivity of the photoconductive layer, and ε0 (F/m): a vacuum permittivity.
EP06120944A 2005-09-21 2006-09-20 Image forming apparatus having a high capacitance photoconductive layer Not-in-force EP1767997B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005274079 2005-09-21
JP2006249255A JP2007114757A (en) 2005-09-21 2006-09-14 Image forming device

Publications (3)

Publication Number Publication Date
EP1767997A2 EP1767997A2 (en) 2007-03-28
EP1767997A3 true EP1767997A3 (en) 2009-02-25
EP1767997B1 EP1767997B1 (en) 2010-06-16

Family

ID=37533533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06120944A Not-in-force EP1767997B1 (en) 2005-09-21 2006-09-20 Image forming apparatus having a high capacitance photoconductive layer

Country Status (4)

Country Link
US (1) US7471909B2 (en)
EP (1) EP1767997B1 (en)
JP (1) JP2007114757A (en)
DE (1) DE602006014916D1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8516300B2 (en) * 2005-08-29 2013-08-20 The Invention Science Fund I, Llc Multi-votage synchronous systems
JP4871682B2 (en) 2005-09-21 2012-02-08 キヤノン株式会社 Image forming apparatus
JP5207702B2 (en) * 2006-10-20 2013-06-12 キヤノン株式会社 Image forming apparatus
JP5132161B2 (en) * 2007-02-02 2013-01-30 キヤノン株式会社 Image forming apparatus
US20080227017A1 (en) * 2007-03-16 2008-09-18 Konica Minolta Business Technologies, Inc. Non-spherical resin particle and production method thereof
WO2009125856A1 (en) * 2008-04-10 2009-10-15 キヤノン株式会社 Image formation device
US7991314B2 (en) * 2009-11-25 2011-08-02 Xerox Corporation In situ electrophotographic printer toner charge measurement
JP6095352B2 (en) 2012-12-11 2017-03-15 キヤノン株式会社 Developing device and image forming apparatus
JP7172632B2 (en) * 2019-01-17 2022-11-16 京セラドキュメントソリューションズ株式会社 image forming device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6702088A (en) * 1966-03-02 1967-09-04
EP0614129A1 (en) * 1993-02-05 1994-09-07 Kyocera Corporation Magnetic carrier, developer comprising the carrier for developing latent electrostatic images, electrographic photoconductor, and image formation method using the same
JPH08160639A (en) * 1994-12-07 1996-06-21 Canon Inc Electrophotographic photoreceptor and electrophotographic device
JP2003076121A (en) * 2001-09-07 2003-03-14 Ricoh Co Ltd Image forming apparatus and image forming processing unit
US20040120733A1 (en) * 2001-01-19 2004-06-24 Katsuhiro Aoki Image forming apparatus

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
JPH0635302A (en) * 1992-07-16 1994-02-10 Canon Inc Image forming device
US5678130A (en) * 1992-09-29 1997-10-14 Canon Kabushiki Kaisha Developing apparatus including a control function for applied periodic developing bias field
JP2984577B2 (en) * 1995-01-25 1999-11-29 キヤノン株式会社 Image forming method
JP4016440B2 (en) * 1996-09-30 2007-12-05 富士ゼロックス株式会社 Electrophotographic equipment
JP3242015B2 (en) * 1996-12-28 2001-12-25 キヤノン株式会社 Image forming device
JPH11212362A (en) * 1998-01-20 1999-08-06 Canon Inc Developing device
JPH11338170A (en) 1998-05-22 1999-12-10 Canon Inc Image forming device
JP2001042641A (en) * 1999-08-04 2001-02-16 Fujitsu Ltd Developer, developing method, developing device and component therefor, and image forming device
JP2001051465A (en) * 1999-08-11 2001-02-23 Ricoh Co Ltd Method for forming full color image, toner for full color electrophotography, manufacture thereof, and intermediate transfer body to be adopted for the full color image forming method
JP2002023480A (en) * 2000-07-06 2002-01-23 Canon Inc Image forming device
US6694110B2 (en) * 2001-02-19 2004-02-17 Canon Kabushiki Kaisha Image forming apparatus with variable waiting time conveyance feature
JP2002244335A (en) * 2001-02-21 2002-08-30 Ricoh Co Ltd Electrophotographic developer and image forming method
JP3841341B2 (en) * 2001-03-07 2006-11-01 株式会社リコー Electrostatic latent image development method
JP4210138B2 (en) 2003-03-18 2009-01-14 京セラミタ株式会社 Image forming system using amorphous silicon photoconductor
JP4280692B2 (en) * 2003-10-24 2009-06-17 キヤノン株式会社 Image forming apparatus
JP2005165004A (en) * 2003-12-03 2005-06-23 Canon Inc Image forming apparatus
KR100708156B1 (en) * 2005-07-08 2007-04-17 삼성전자주식회사 Image forming apparatus having a plurality of developing units and Method for controlling voltage applying to the developing unit
JP4871682B2 (en) * 2005-09-21 2012-02-08 キヤノン株式会社 Image forming apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6702088A (en) * 1966-03-02 1967-09-04
EP0614129A1 (en) * 1993-02-05 1994-09-07 Kyocera Corporation Magnetic carrier, developer comprising the carrier for developing latent electrostatic images, electrographic photoconductor, and image formation method using the same
JPH08160639A (en) * 1994-12-07 1996-06-21 Canon Inc Electrophotographic photoreceptor and electrophotographic device
US20040120733A1 (en) * 2001-01-19 2004-06-24 Katsuhiro Aoki Image forming apparatus
JP2003076121A (en) * 2001-09-07 2003-03-14 Ricoh Co Ltd Image forming apparatus and image forming processing unit

Also Published As

Publication number Publication date
US7471909B2 (en) 2008-12-30
JP2007114757A (en) 2007-05-10
EP1767997A2 (en) 2007-03-28
DE602006014916D1 (en) 2010-07-29
US20070071473A1 (en) 2007-03-29
EP1767997B1 (en) 2010-06-16

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